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Full text of "The manufacture and properties of iron and steel"

WELDING.
4:05
will bo a revelation to most metallurgists that such a high content of copper could be allowed. All the bars broke across the weld with a more or less crystalline fracture, there being no instance where the separation was at the plane of union, so that, while thorough welding was proven, it was evident from the lessened ductility that the metal was overheated during the operation.
TABLE XIX-A.—Continued.
Kind of BtOOl.	Conditions of test.	Composition; percent.					3S=natnraI. ~W= welded.	Elastic limit; ponnds per square inch.	Ultimate strength; pounds per square inch.	Elongation in 8 inches; percent.	Eeduction of area ; per cent.	Name of smith. 1
		G. .08	Mn.	P.	B.	Ou.						
Basic 0. H. soft.	at?   , §1&2 Ig's		.60	.027	. . .	.85	N W W W "W	80820 87880 40880 14510	62000 (40210) 00400 08880 (55500)	80.00 *0.00 *80.00 "*i7."od	55.90 8.22 48.16 48.54	A B O D
												
												
												
Aold Bess, soft.	2xM-ineh flats; lap weld.	.00	.80	.082	.064	.00	N W	40780 42780	50140 50500	20.50 7.50	47.05 21.00	. . .
		Too"										
			.-10	.082	.054	,00	N W	42020 45150	01870 65780	25.00 8.50	46.80 24.78	
		.00										
			.45	.OS2	.054	.00	N W	40740 40720	00780 68540	20.25 6.00 "~28.75 1.25	40.72 10.48	-LLL
		.00	*									
			.85	.082	.054	.00	N W	42080 48850	60780 48740		47.28 20.20	
												
Basic 0. H. sort.	Sx^i-Inch flats; scarf weld.	.08	.17	,ooa	,010	.10	N" W	80800 81090	46070 48200	89.00 11.25	09.70 42.10	
		~M										
			.82	.on	.020	,08	N w	88000	50190 45000	88.75 8.50	58.48 84.11	
		"H"										
			.82	.000	.018	.11	N W	85780 82120	40580 46280	88.00 10.00	50.02 22.18	
		,OQ										
			.29	.005	.021	.10	N W	80800 87400	50050 45280	88.00 7.60	50.82 41.08	. . .
												
Basic 0, H. soft.	2x«-inch flats; lap weld.	.12	.86	.005	.022	.08	N w	84580 80840	61080 41600	28.50 7.60	48.08 20.84	
		"jJF										
			.80	.005	.025	.10	N W	85470	50770 87000	88.76 7.60	61.50 20.88	
		"jsf										
			.29	,005	.010	.10	N" W	80880 88800	51800 48580	81.25 7.00	52.02 20.81	
		"02"										
			.51	.005	.021	.00	N "W	87050 85200	54770 48280	20.25 7.00	41.04 21.74	. . .
		-----										
"Wrought-Iron.	P« *p fl<3						N W W W w w	88800 82050 84050 82700 82040 82700	50080 80820 40020 45140 44780 88480	28.50 6.00 6.25 11.76 11.00 4.00	27.26 15.52 22.26 20.08 10.25 0.86	! '. '.